This article continues the previous discussion of bank net interest margins. In it, I discussed how changes in the yield curve changed the net interest margin (NIM) for banks. This showed up historically — when bank balance sheets were shattered by the combination of holding long-dated mortgages with low fixed coupons versus having a sky-high short-term rate imposed by deranged Monetarists. In this article, I address a common macroeconomic story: yield curve inversions cause recessions by the alleged effect on NIM. As a spoiler, I do not think that story holds water in “modern” banking systems.
Recent Posts
Monday, November 28, 2022
Tuesday, November 22, 2022
The Yield Curve And Bank Net Interest Margins
One of the topics that comes up whenever government bond curves re-price is the relationship between the yield curve and bank net interest margins (NIM). This then morphs into a second question: does a yield curve inversion cause a recession by the (alleged) effect of the yield curve on bank interest margins, reducing the willingness of banks to lend?
Wednesday, November 16, 2022
Crypto Failures Versus Bank Failures
Saturday, November 12, 2022
Podcast
I was invited onto the MMT Podcast with Patricia Pino and Christian Reilly (thanks!): “What Is A Bond Vigilante And How Do We Get Rid Of Them?” A discussion of some of the issues raised by the wackiness in the U.K. bond market. Obviously not a current event, but a discussion of what we can learn.
Friday, November 11, 2022
Random Comments 2022-11-11
A set of largely unconnected comments on recent events. None of them necessitate long form treatment.
Wednesday, November 9, 2022
Primer: Bank Capital
Bank capital is the buffer on a bank’s balance sheet that allows it to absorb losses, particularly credit losses. Although there is a great deal of excitement about bank liquidity — bank runs, just like in “It’s a Wonderful Life”! — but the main danger is the capital buffer being wiped out (insolvency). A bank run might feature at the end of the bank’s lifetime (quite often, regulators just step in), but the trigger is the insolvency. This article discusses bank capital at a high level, from a macroeconomic viewpoint.
Sunday, November 6, 2022
Social Media Discontents
(Note: anyone interested in technical discussions can skip this post. This is just explaining my thinking about my content delivery.)






